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ACI-ASTM CK35MN Steel vs. Grade 7 Titanium

ACI-ASTM CK35MN steel belongs to the iron alloys classification, while grade 7 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK35MN steel and the bottom bar is grade 7 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 40
24
Fatigue Strength, MPa 270
250
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 81
38
Tensile Strength: Ultimate (UTS), MPa 650
420
Tensile Strength: Yield (Proof), MPa 310
340

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1410
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 12
22
Thermal Expansion, µm/m-K 16
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
7.2

Otherwise Unclassified Properties

Density, g/cm3 8.0
4.5
Embodied Carbon, kg CO2/kg material 5.9
47
Embodied Energy, MJ/kg 81
800
Embodied Water, L/kg 210
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
95
Resilience: Unit (Modulus of Resilience), kJ/m3 240
560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 22
26
Strength to Weight: Bending, points 21
28
Thermal Diffusivity, mm2/s 3.3
8.9
Thermal Shock Resistance, points 14
31

Alloy Composition

Carbon (C), % 0 to 0.035
0 to 0.080
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0 to 0.4
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 43.4 to 51.8
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 6.0 to 6.8
0
Nickel (Ni), % 20 to 22
0
Nitrogen (N), % 0.21 to 0.32
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.12 to 0.25
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
98.7 to 99.88
Residuals, % 0
0 to 0.4